Modal ontologic

Abstrakt

The paper deals with several problems concerning ontological notions of existence, possibility, well-foundation and fusion, used in reference to objects, in relation to contemporary semantic analysis of modal terms. The name ontologic was suggested by Polish logician Jerzy Perzanowski for theoretical or formal part of ontology. Term modal ontologic refers to the formal logical study of ontological concepts within the framework of propositional modal logic, especially a study of logical interconnections between modal concepts as applied to propositions or some proposition-like entities, on the one hand, and ontological concepts of existence, possibility, well-foundation and fusion used in reference to objects, on the other hand. It is shown, that a slight modication to contemporary semantic analysis of modal terms can capture some intuitions of Aristotle and his scholastic followers, especially about so-called modalities de re.